

354 

WWUS20 KWNS 190501

SEL2

SPC WW 190501

MTZ000-SDZ000-WYZ000-191100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 312

NWS STORM PREDICTION CENTER NORMAN OK

1105 PM MDT THU JUN 18 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST MONTANA

  NORTHWEST SOUTH DAKOTA

  FAR NORTHEAST WYOMING



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1105 PM

  UNTIL 500 AM MDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



SUMMARY...A LINE OF SEVERE THUNDERSTORMS IS EXPECTED TO MOVE

EASTWARD ACROSS SOUTHEAST MONTANA INTO NORTHWEST SOUTH DAKOTA

TONIGHT WITH A CONTINUED THREAT FOR DAMAGING WINDS AND LARGE HAIL.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF

BROADUS MONTANA TO 70 MILES EAST SOUTHEAST OF BUFFALO SOUTH

DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27035.





...WEISS



409 

WWUS20 KWNS 190501

SEL2

SPC WW 190501

MTZ000-SDZ000-WYZ000-191100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 312

NWS STORM PREDICTION CENTER NORMAN OK

1105 PM MDT THU JUN 18 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST MONTANA

  NORTHWEST SOUTH DAKOTA

  FAR NORTHEAST WYOMING



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1105 PM

  UNTIL 500 AM MDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



SUMMARY...A LINE OF SEVERE THUNDERSTORMS IS EXPECTED TO MOVE

EASTWARD ACROSS SOUTHEAST MONTANA INTO NORTHWEST SOUTH DAKOTA

TONIGHT WITH A CONTINUED THREAT FOR DAMAGING WINDS AND LARGE HAIL.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF

BROADUS MONTANA TO 70 MILES EAST SOUTHEAST OF BUFFALO SOUTH

DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27035.





...WEISS

